123140217583 has 2 divisors, whose sum is σ = 123140217584. Its totient is φ = 123140217582.

The previous prime is 123140217547. The next prime is 123140217601. The reversal of 123140217583 is 385712041321.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-123140217583 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123140217503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61570108791 + 61570108792.

It is an arithmetic number, because the mean of its divisors is an integer number (61570108792).

Almost surely, 2^123140217583 is an apocalyptic number.

123140217583 is a deficient number, since it is larger than the sum of its proper divisors (1).

123140217583 is an equidigital number, since it uses as much as digits as its factorization.

123140217583 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 40320, while the sum is 37.

The spelling of 123140217583 in words is "one hundred twenty-three billion, one hundred forty million, two hundred seventeen thousand, five hundred eighty-three".